著者

板生 清

出版者

一般社団法人 電気学会

雑誌

電気学会誌 = The journal of the Institute of Electrical Engineers of Japan (ISSN:13405551)

巻号頁・発行日

vol.121, no.1, pp.56-60, 2001-01-01

被引用文献数

1

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.125, no.1, pp.29-33, 2005

被引用文献数

1

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本記事に「抄録」はありません。

著者

大西 公平

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.115, no.6, pp.370-373, 1995-05-20 (Released:2008-04-17)

参考文献数

2

著者

高西 淳夫

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.118, no.1, pp.5-8, 1997-12-20 (Released:2008-04-17)

参考文献数

16

著者

伊藤 誠悟 河口 信夫

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)

巻号頁・発行日

vol.126, no.10, pp.1212-1220, 2006-10-01

参考文献数

17

被引用文献数

17 10

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本論文では,既設の無線LANアクセスポイントと,既存の無線LANアダプタを用いて端末の位置推定を行う手法を提案する。 本手法では,位置推定を行う場所において各無線LANアクセスポイントからの電波強度を事前に測定し,ユーザはそれらを事前モデルとして保持する。 ユーザは事前モデルと現在ユーザが観測できる無線LANアクセスポイントの電波強度を用いて現在位置を推定する。 しかし,屋内環境において無線LANの受信電波強度はマルチパス等の影響により複雑に変化するため,位置推定を行う際に利用するアクセスポイントを適切に選択する必要がある。 本手法においては端末の位置推定時に,アクセスポイントを選択する段階と位置推定を行う段階の2段階に分けることにより,位置推定のために有用な情報を提供するアクセスポイントを選択し,選択されたアクセスポイントの情報を利用して位置推定を行う。 実験の結果,適切なアクセスポイントを選択し位置推定を行うことにより,位置推定精度の向上を確認したので報告する。 加えて,無線LANによる位置依存アプリケーションを紹介する。

著者

高橋 信明 杉本 諭 岡田 益男 本間 基文

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌A(基礎・材料・共通部門誌) (ISSN:03854205)

巻号頁・発行日

vol.113, no.4, pp.251-260, 1993

被引用文献数

1 6

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Present work describes the magnetic properties of Nd-Fe-B melt-spun ribbons which have lower Nd content than the Nd₂Fe₁₄B compound. The studied alloys were (1) Nd_xFe_94-xB₆, (2) (Fe₃B)_1-x-(Nd₂Fe₁₄B)_x and (3) Fe_1-x-(Nd₂Fe₁₄B)_x. The grain refinement were underwent by studying the conditions of annealing for crystallization. It results in disappearing noticeable knicks in the demagnetization curves, which is attributed to precipitations of &alpha;-Fe and Fe₃B phases. The Nd₈Fe₈₆B₆ melt-spun ribbon annealed at 650&deg;C for 30 min exhibits the highest (<i>BH</i>)_max of 126kJm^-3(15.8MGOe). The V addition is effective for improving the coercivity.

著者

新田 東平 川根 清 山田 直也

出版者

一般社団法人 電気学会

雑誌

電氣學會雜誌 (ISSN:00202878)

巻号頁・発行日

vol.86, no.931, pp.629-638, 1966-04-01 (Released:2008-04-17)

参考文献数

15

著者

高原 健爾 中野 美香 梶原 寿了

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌. A, 基礎・材料・共通部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A, A publication of Fundamentals and Materials Society (ISSN:03854205)

巻号頁・発行日

vol.130, no.1, pp.87-94, 2010-01-01

参考文献数

18

被引用文献数

8 4

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The purpose of this study is to suggest the communication education for students in the science and engineering majors. The main characteristic of the curriculum is the process of value and attitude changes of students by debate. It is effective to cultivate well-balanced manner and matter which take significant role in any communication. The lectures provide debate training to match the proficiency of the students in order to foster thinking ability step-by-step. In the department of electrical engineering of Fukuoka Institute of the Technology, the expert of the communication and the expert of the electrical engineering team-teach the course as one of the specialized subjects. This system provides both training of technique of constructing argument and professional assessment on their contents, which it calls &ldquo;two wheels of one cart&rdquo;. The lectures are organized to develop students' incentive to learn with ARCS model. The questionnaires show that the communication skills acquired through debates are applied in the scenes of the real problem solving. 90% of the students reply that the series of lectures are useful and produce satisfactory results. Therefore, the proposed education is confirmed to be effective to enhance the communication skills of students.

著者

田村 滋

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌B(電力・エネルギー部門誌) (ISSN:03854213)

巻号頁・発行日

vol.135, no.1, pp.2-8, 2015 (Released:2015-01-01)

参考文献数

21

被引用文献数

1

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Battery Energy Storage system (BESS) is prospective energy storage in Smart Grid and Hybrid Energy Storage System (HESS) composed of two different kinds of battery is also studied to achieve better performance and lower cost than single kind of BESS. The cost issue, however, has not been evaluated explicitly so far. On the other hand, BESS is studied and expected for ancillary service although HESS has not been applied to frequency control in power system. This paper focuses on HESS application to frequency control and its economic analysis. In this paper, the important battery characteristics in the application to power system are introduced and two kinds of HESS are evaluated in terms of their cost when they are applied to frequency control. In addition, the cost is analyzed for when HESS is used for Peak Shift as well as frequency control.

著者

野田 慎一郎

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌B(電力・エネルギー部門誌) (ISSN:03854213)

巻号頁・発行日

vol.134, no.3, pp.NL3_6-NL3_8, 2014-03-01 (Released:2014-03-01)

参考文献数

1

著者

桂 誠一郎 大西 公平

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.123, no.11, pp.1371-1376, 2003 (Released:2004-06-18)

参考文献数

10

被引用文献数

9 15

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Minimally invasive surgery (MIS) which thinks a great deal of patient’s quality of life (QOL) has attracted attention during about ten years. In this paper, it aims at development of the technology for transmitting force sensation required in medical treatment especially through surgical instruments, such as forceps. In bilateral control, it is a problem how master and slave robots realize the law of action and reaction to the environment. Mechanism of contact with environment and bilateral controller based on stiffness are shown. Master arm in contact with human and slave arm in contact with environment are given compliance, and stable contact with environment can be realized. The proposed method is applied to 3-link master-slave manipulators. As a result, transmission and reproduction of force sensation can be realized. The experimental results show viability of the proposed method.

著者

朴 鍾淏 高間 信行 藤田 博之 金 範埈

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌. E, センサ・マイクロマシン部門誌 (ISSN:13418939)

巻号頁・発行日

vol.132, no.9, pp.303-308, 2012

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In this work, we have developed an alternative and improved &ldquo;optical softlithographic&rdquo; microfabrication method for patterning on a concave substrate as well as the fabrication of micro patterned PDMS cylindrical stamps for the potential application to nano imprinting. Firstly, we fabricated SU-8 micro patterns with high aspect ratio (over 4) on a concave glass substrate using optical softlithography, where UV light was exposed through a very flexible mask attached on the concave surface. We investigated the optimal experimental conditions depending on shapes and scales, and examined the resolutions of patterns. Next, we replicated a PDMS cylindrical stamp using SU-8 micro patterns as a mold. Intermediate female molds were made from the original cylindrical mold. Then, the stamp was made by filling the intermediate mold with PDMS monomer and solidifying it. Thus, this technique provides us with novel fabrication technique of 3D micro patterns on curved substrate as well as a cylindrical polymer stamp for roll micro contact printing.

著者

東 聖 伊藤 大介 石田 貴仁 岩田 明彦 菅原 賢悟 森本 茂雄

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌D(産業応用部門誌) (ISSN:09136339)

巻号頁・発行日

vol.139, no.5, pp.495-502, 2019-05-01 (Released:2019-05-01)

参考文献数

15

被引用文献数

2

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This paper proposes countermeasures to reduce radiated AM radio frequency noise caused by the VVVF (variable-voltage/variable-frequency) inverter system incorporated with an electric railway car. First, the common-mode current flowing through a cooling fin earth line is studied, and the connection change of the line shows good attenuation of the 1.26MHz resonance component. Second, the common-mode current flowing though the motor earth line with a capacitor is focused upon, and the modified connections of the line to the outside of the input common-mode core achieves fine noise reduction in the range from 500kHz to 1.5MHz. In such cases, the existing input common-mode core is utilized to establish the impedance, which is efficient in both the noise reduction and the countermeasure cost reduction. Finally, a current simulation model which is paid attention to the AM radio frequency range is examined with the measured impedance data of the VVVF inverter system. The currents flowing thorough the cooling fin earth line and the motor earth line is simulated, and these simulated currents show good agreement with the measured one.

著者

高原 英明

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.122, no.9, pp.601-605, 2002-09-01 (Released:2008-04-17)

参考文献数

30

被引用文献数

1 1

著者

飛岡 正己

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.119, no.3, pp.156-159, 1999-03-01 (Released:2008-04-17)

参考文献数

2

著者

山本 充義 篠原 裕文

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.116, no.6, pp.352-357, 1996-05-20 (Released:2008-04-17)

参考文献数

14

著者

大久保 翔太 川越 夏樹 繁内 宏治 名取 賢二

出版者

一般社団法人 電気学会

雑誌

電気学会誌 (ISSN:13405551)

巻号頁・発行日

vol.138, no.1, pp.4-7, 2018

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<p>1.はじめに</p><p>2017年8月下旬のうだるような暑さの中,品川駅から徒歩15分の場所にあるというソニー歴史資料館に向かった。品川駅高輪口から地図を頼りに歩き出すと,10分もしないうち</p>

著者

Guidi Giuseppe Undeland Tore M. Hori Yoichi

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌. D, 産業応用部門誌 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society (ISSN:09136339)

巻号頁・発行日

vol.128, no.4, pp.418-423, 2008-04-01

参考文献数

9

被引用文献数

11

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This paper presents a converter topology used to interface a bank of Supercapacitors (SC) to a stiff DC-Link, like the one constituted by a typical battery. Main feature of the proposed converter is the reduced ratings of the power electronics switches compared to standard topologies. The capabilities of the proposed system in terms of energy storage and controllability of the power flow in and out the SC bank are identical to those of a conventional system, making the solution very attractive in terms of cost and efficiency in a wide number of applications. Theoretical principles underlying the converter operation are given, along with an experimental evaluation of the proposed solution, showing its practical feasibility.

著者

川口 弘哲 松本 哲也 竹内 義則 工藤 博章 大西 昇

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society (ISSN:03854221)

巻号頁・発行日

vol.130, no.12, pp.2180-2181, 2010-12-01

参考文献数

2

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We aim to discover the factors of an unpleasant sound by processing the sound in the frequency domain. The processed sounds have the same amplitude envelope as an unpleasant sound, and consist of only one or two peak frequencies of the original unpleasant sound. Using these sounds, we attempt to specify a frequency band relating to unpleasantness. As a result, the sound with two pair of peak frequencies tends to make subjects feel unpleasant compared with one peak, and subjects feel unpleasant by the sounds having peaks in 2kHz and 9kHz around. Next, we investigate whether the sound becomes unpleasant by adding the amplitude envelope of unpleasant sounds. The result shows that addition of the envelope makes subjects feel unpleasant compared with the carrier alone.

著者

竹下 隆晴 北川 亘 浅井 石南 中澤 秀彦 古橋 雄介

出版者

一般社団法人 電気学会

雑誌

電気学会誌 = The journal of the Institute of Electrical Engineers of Japan (ISSN:13405551)

巻号頁・発行日

vol.132, no.10, pp.673-676, 2012-10-01

参考文献数

2

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本記事に「抄録」はありません。